Huh, thank you for the informative reply. I will reconsider my view, which I had perhaps overstated before to make a point. Wikipedia gives a citation for back

Huh, thank you for the informative reply. I will reconsider my view, which I had perhaps overstated before to make a point. Wikipedia gives a citation for backpropagation going back to 1963 by the way, but looking more carefully you are right that the 1986 paper is important.